Edmund married Anne Plantagenet of Glocester Countess Stafford, daughter of Thomas Plantagenet of Woodstock, Duke of Gloucester and Eleanor de Bohun, on 28 Jun 1398.796 (Anne Plantagenet of Glocester Countess Stafford was born on 30 Apr 1383 796,1519 and died on 16 Oct 1438 796.)